Room‐temperature bonding method of bioactive ultrathin glass film on titanium by a dissolution‐polymerization reaction
Room‐temperature bonding method of bioactive ultrathin glass film on titanium by a dissolution‐polymerization reaction
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DOI：
10.1111/jace.17455
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发表时间：
2020
影响因子：
3.9
通讯作者：
Yin Liu;T. Kishi;R. Jeng;N. Matsushita;T. Yano
中科院分区：
文献类型：
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作者：
Yin Liu;T. Kishi;R. Jeng;N. Matsushita;T. Yano
采用室温键合的方法成功地将45S5生物玻璃的超薄独立玻璃膜（UGF）键合在Ti衬底上。采用玻璃吹制技术制备了厚度为1~4 μm的45S5 UGF，并在室温下将其贴附在Ti板上，中间有一层水层。粘接后的粘接强度约为370 mJ/m2，室温下常温保存过程中粘接强度有所增加，保存9 h后达到900 mJ/m2左右。用X射线光电子能谱分析了UGF与Ti衬底在键合过程中的界面。制备的UGF具有高Na2O含量和低SiO2含量的表面层，富Na2O组分在水层中的溶解引起了SiO2网络的解聚和聚合，在UGF与Ti板之间形成Si - O - Si键，并在储存过程中增加了键合强度。这项工作提出了一种简单的技术，将生物活性玻璃层压在金属表面，而不需要后处理。
Freestanding ultrathin glass film (UGF) of 45S5 bioglass was successfully bonded on a Ti substrate by the room‐temperature bonding method. 45S5 UGFs with a thickness of 1~4 μm were fabricated by the glass‐blowing technique, and the UGF was attached on the Ti plate at room temperature with a water layer between them. The bonding strength was about 370 mJ/m2just after bonding, and it increased during storing in the ambient atmosphere at room temperature and reached about 900 mJ/m2after 9 hours storage. The interfaces of the UGF and Ti substrate during the bonding process were analyzed by an X‐ray photoelectron spectroscopy. The as‐prepared UGF was found to have surface layers with a high content of Na2O and low content of SiO2, and the dissolution of Na2O‐rich component into water layer induced depolymerization and polymerization of SiO2network to form Si‐O‐Si bonds between the UGF and Ti plate and then to increase the bonding strength during storage. This work presents the simple technique to laminate the bioactive glass layer on the surface of the metal without post heat treatment.